Homeostasis is the maintenance of somewhat stable conditions inside the body. Each and every body structure contributes in some way to keep the inside of our body’s and its functioning within normal limits. It is extremely important for proper functioning of all the human body systems.
Sometimes our body fails like with Diabetes for example. Glucose is the main sugar that comes from the digestion of the foods that we eat and the liquids that we drink. For example, breads, cereals, dairy foods (such as milk), fruits, and some vegetables that contain carbohydrate in the forms of starches and sugars.Diabetes is a health condition causing high glucose, also called sugar, content in the bloodstream because the pancreas no longer produces insulin or the cells of the body are no longer metabolizing the insulin the pancreas produces. So in this case homeostasis cannot occur. The primary symptoms of diabetes are increased thirst, frequent urination, and high levels of sugar in the blood or urine.
Other symptoms include dry mouth, irritability, unusual weight loss, and extreme hunger.Over time, the high blood glucose levels present, as a result of diabetes, may cause serious complications, such as damage blood vessels and nerve cells, leading to damaged eyes, nerves and kidneys and an increased risk of heart attack, stroke, impotence, and foot problems. Another example is hypertension. Hypertension is the term used to describe high blood pressure. Blood pressure is a measurement of the force against the walls of your arteries as your heart pumps blood through your body.
Blood pressure is usually read 120/80. The top number is called the systolic blood pressure, which is the force of blood in the arteries as the heart beats, and the bottom number is called the diastolic blood pressure which is the force of blood in the arteries as the heart relaxes between beats. When you blood pressure is a normal it’s lower than 120/80 mmHg most of the time. High blood pressure (hypertension) which is what you have is when the reading is at least 140/90 or higher.One negative feedback system that helps regulate in blood pressure with negative feedback system is when the heart beats faster or harder, blood pressure increases. If a stimulus causes blood pressure to rise the following sequence of events occurs.
Baroreceptors (the receptors) pressure-sensitive nerve cells located in the walls of certain blood vessel, detect the higher pressure. The baroreceptors send nerve impulses (input) to the brain (control center). The brain nerve impulses (output) to the heart and blood vessels (the effectors).Heart rate decreases and blood vessels dilate (widen), which cause blood pressure to decrease (response). The organ systems involved are the heart which creates one force as it pumps blood into the arteries and through the circulatory system.
The other force comes from the arteries resisting the blood flow. Homeostatic regulation of blood pressure by a negative feedback system the response is fed back into the system, and the system continues to lower blood pressure until there is a return to normal blood pressure which is the perfect example of homeostasis.
